Hi everybody. I wrote a game called Two-Fisted Tales , which recently came out for a 2nd edition, and I wanted to write a guide for playing the game in Roll20. I'm trying to figure out how to best simulate its die mechanics. 2FT uses variant d10s, which go from 0-9 instead of 1-10. The basic roll is Ability + d10* - d10*, where the d10s go from 0-9. These dice also explode , so you reroll and add every time you get a 9. In addition, the game counts "doubles" separately: If your d10s get the same roll, it counts as a "close call," between a failure and a success. This counts for double 9s as well, so you ignore all the "exploding" values. However if the doubles value, from 0 to 9, is higher than your Luck score, the result is a "fumble," rather than a "close call." The best kludge I can see, for the Roll20 interface, is /roll 1d10!p-1d10!p, and then look at the die results for close calls and fumbles. It's not as elegant as I'd like though, and I'd welcome suggestions.